मासातीते तु नित्ये हि पुनश्चोपनयं चरेत् । ईशो गौरीगुहो विष्णुर्ब्रह्मा चेंद्र श्च वै यमः ३१ ।
If one omits Sandhyā for a month one has to be re-invested with the sacred thread. For the sake of prosperity deities shall be propitiated such as Īśa, Gaurī, Guha. Viṣṇu. Brahmā, Candra (the moon) and Yama.