Dear all,

For what it is worth, a few Pali references, and a bit of Sanskrit:

PTS Pali-English Dict
https://dsalsrv04.uchicago.edu/cgi-bin/app/pali_query.py?qs=Sajjati  

1) Visajjati (p. 639) Visajjati Visajjati [vi+sajjati, Pass. of sañj; the regular Act. would be visajati] to hang on, cling to, stick to, adhere (fig.); only in pp. visatta (q. v.). -- The apparent ger. form visajja belongs to vissajjati.

1) Vissajjati (p. 641) Vissajjati Vissajjati [vi+sajjati, of sṛj. The ss after analogy of ussajjati & nissajjati, cp. ossajjati for osajjati]. A. The pres. vissajjati is not in use. The only forms of the simple verb system are the foll.: ger. vissajja, usually written visajja, in meaning "setting free," giving up, leaving behind Sn 522, 794, 912, 1060; Nd1 98; Nd2 596. -- grd. vissajjaniya [perhaps better to vissajjeti1] to be answered, answerable; nt. a reply Nett 161, 175 sq., 191; and vissajjiya to be given away: see under . <-> pp. vissaṭṭha. -- B. Very frequent is the Caus. vissajjeti (also occasionally as visajj˚) in var. meanings, based on the idea of sending forth or away, viz. to emit, discharge J i.164 (uccāra -- passāvaŋ). -- to send Mhvs 8, 3 (lekaŋ visajjayi). -- to dismiss PvA 81 (there). -- to let loose PvA 74 (rathaŋ). -- to spend, give away, bestow, hand over Pug 26 (visajj˚); Nd1 262 (dhanaŋ); Miln 41 (dhaññaŋ); PvA 111, 119. -- to get rid of J i.134 (muddikaŋ). -- to answer (questions), to reply, retort Sn 1005 (˚essati, fut.); VvA 71; PvA 15, 59, 87. -- pp. vissajjita. -- Caus. II. vissajjāpeti (in meanings of vissajjeti) J iv.2 (hatthaŋ=to push away); Miln 143; Mhvs 6, 43.

1) Sanga (p. 666) Sanga Sanga [fr. sañj: see sajjati1] cleaving, clinging, attach- ment, bond S i.25, 117 sq.; A iii.311; iv.289; Dh 170, 342, etc.; Sn 61, 212, 386, 390, 475, etc.; Dhs 1059; DhsA 363; J iii.201; the five sangas are rāga, dosa, moha, māna, and diṭṭhi, Thag. 633=Dhp. 370; DhA iv.187; seven sangas, It. 94; Nd1 91, 432; Nd2 620.
   -- âtiga one who has overcome attachment, free from attachment, an Arahant M i.386; S i.3, 23; iv.158= It 58; Sn 250, 473, 621; DhA iv.159.

1) Sajjati (p. 668) Sajjati Sajjati [Pass. of sañj or saj to hang. Cp. sanga] 1. to cling, to, to be attached S i.38, 111 (aor. 2 sg. sajjittho); ii.228; A ii.165; J i.376 (id. asajjittho); Sn 522, 536. ppr. (a)sajjamāna (un) -- attached Sn 28, 466; J iii.352. -- 2. to hesitate J i.376 (asajjitvā without hesitation). -- pp. satta1. -- Cp. abhi˚ & vi˚.

1) Satta (p. 673) Satta Satta1 [pp. of sañj: sajjati] hanging, clinging or attached to Vin i.185; D ii.246; Nd1 23, 24; Dh 342; J i.376. Cp. āsatta1 & byāsatta.

Critical Pali Dictionary
https://cpd.uni-koeln.de/search?article_id=8235  

abhi-sajjati

, pr. 3 sg. (orig. pass, of prec, cf. sa.
sajjate, Buddh.sa. abhi-ṣajyate, Av-ç 1286,1), (a) Utt.
to stick fast on, to linger in (gāme); (b) to take offence
(+ kuppati); AN I 127,1 (~ati + kuppati vyāpajjati
patiṭṭhīyati (or °tthīyati) kopañ ca dosañ ca appac-
cayañ ca pātukaroti) ≠ AN II 203,16 foll. (quoted Sadd
96,27)≠AN III 181,10 foll..≠Pp 30,6 (= laggati, Pp-a)
= 36,26 ≠ MN III 204,19 foll.; 1 sg. n'evâbhisajjāmi
na câpi kuppe, Ja III 120,15* (= laggāmi, Ct.);
pot. 3 sg. ~eyya, Sn 929 (gāme ca nâbhisajjeyya; =
gāme ca gihisaṁsaggâdīhi ~, Pj; cf. Nidd I 387,1
(a)); as to pot. 3 sg. med. ~etha, Ja V 175,24' (see
abhi-sajjati≠ DN III 159,8 (nâ°; = kuṭila-kaṇṭako viya tattha
tattha mammaṁ (so pt, Se; Ee tattha ca cammaώ)
tudanto viya na laggi, Sv); 1 sg. ~sajjiṁ, AN II 204,34
(+ kuppiṁ, etc.); inf. ~itum (imāya appamattāya),
DN I 91,28 (= kodha-vasena laggituṁ, Sv). 


from Huet’s Sanskrit Grammar Companion: Conjugation
https://sanskrit.inria.fr/cgi-bin/SKT/sktconjug.cgi?lex=MW&q=sa%7Enj&t=VH&c=1&font=roma 

from the conjugation tables of sañj.

Causative conjugation:
Participles

Past Passive Participle
sajjita
m. n. sajjitā f.

Past Active Participle
sajjitavat
m. n. sajjitavatī f.

Present Active Participle
sajjayat
m. n. sajjayantī f.

Present Middle Participle
sajjayamāna
m. n. sajjayamānā f.

Present Passive Participle
sajjyamāna
m. n. sajjyamānā f.

Future Active Participle
sajjayiṣyat
m. n. sajjayiṣyantī f.

Future Middle Participle
sajjayiṣyamāṇa
m. n. sajjayiṣyamāṇā f.

Future Passive Participle
sajjya
m. n. sajjyā f.

Future Passive Participle
sajjanīya
m. n. sajjanīyā f.

Future Passive Participle
sajjayitavya
m. n. sajjayitavyā f.

Dan