Gadanigraha 24.18

pañcaiva kāsān prapaṭhanti teṣu sādhyaṃ tathāsādhyamathāpi yāpyam
kṣīṇepvatītāgnyateṣvasādhyaṃ sādhyaṃ baliṣṭhepvāvaleṣu yāpyam