Comments

Comm. NT: 32. Four unities (ekatta) are given in the preceding paragraph of the same Paṭisambhidā ref.: “The unity consisting in the appearance of relinquishment in the act of giving, which is found in those resolved upon generosity (giving up); the unity consisting in the appearance of the sign of serenity, which is found in those who devote themselves to the higher consciousness; the unity consisting in the appearance of the characteristic of fall, which is found in those with insight; the unity consisting in the appearance of cessation, which is found in noble persons” (Paṭis I 167). The second is meant here.

пали	Majjhassa tīṇi lakkhaṇāni, visuddhaṃ cittaṃ ajjhupekkhati, samathapaṭipannaṃ ajjhupekkhati, ekattupaṭṭhānaṃ ajjhupekkhati.
Nyanamoli thera	The middle has three characteristics. He [now] looks on with equanimity at the mind that is purified; he looks on with equanimity at it as having made way for serenity; he looks on with equanimity at the appearance of unity.32