गृहिणी भगिनी तस्याः श्वशुरौ श्याल इत्यपि।
प्राणिनां कलिना सृष्टाः पञ्च प्राणा इमेऽपरे॥कलिविडम्बनम् - ४१॥
gṛhiṇī bhaginī tasyāḥ śvaśurau śyāla ityapi|
prāṇināṁ kalinā sṛṣṭāḥ pañca prāṇā ime'pare||41||
This verse was written by Sri Nilakantha Dikshita in Kalividambanam - a satire on social evils.
The wife, her sister, the parents-in-law and the brother-in-law are another set of five prana - vital airs, created by Kaliyuga (the kali era) for a householder other than the existing set of vital airs such as prana, apana etc.