Kevalī (the omniscient soul) who has reached the pinnacle of knowledge; for him, nothing more remains is to be known.
...uppaṇṇaṇāṇadaṃsaṇadhare arahā jiṇe kevalī, alamatthu tti vattavvaṃ siyā...
(Bhaga 1.209)
'alamatthu'tti... alamastu paryāptaṃ bhavatu, nātaḥ paraṃ kiñcid jñānāntaraṃ prāptavyamastyāstīti.
(Bhaga 1.209 Vr)