Interpretation of varn ̣āpatti

[girish jha]

Dear Indologists,
Could anyone please interpret and also translate into English the term  varṇāpatti  used in the Pañjikā-bhāṣya of the Pāṇinīya Śikṣā 4  as follows:
Nāradaudvrajyor matena yamo varṇāgama iti vidhīyate. ……….Anye tu yamaṃ varṇāpattiṃ manyante.Tathā ca Śaunakaḥ –sparśā yamān ananunāsikāḥ svān pareṣu
sparśeṣv anunāsikeṣu.
Thank you in advance,
Sincerely
GIRISH K. JHA
DEPT OF SANSKRIT
PATNA UNIV.,INDIA