Revākhaṇḍa ascribed to the Vāyupurāṇa (RKV) 26.145

26.145

phālgunasya tṛtīyāyāṃ śuklāyāṃ tu samāpyate /
vaiśākhe lavaṇaṃ deyaṃ jyeṣṭhe cājyaṃ pradīyate //

It ends, however, on the third day of the bright fortnight of Phālguna. / In Vaiśākha salt is to be given, and in Jyeṣṭha clarified butter is given;