The affix āluc comes in the sense of 'agent having such habit etc.' after the words - 1. spṛh 'to desire' 2. gṛh 'to seize' 3. pat 'to go' 4. day 'to give, to go , to protect' 5. nidrā 'to sleep' 6. tandrā 'to be tired' 7. śraddhā 'to venerate'.,
The word निद्रा is formed by adding the preposition नि to the verb द्रा 'to go crookedly'; so also तन्द्रा is formed by adding तद् to द्रा, and then irregularly changing the द् into न्. The term श्रद्धा is formed by adding श्रत् to the verb डुधाञ् 'to hold'. The first three verbs belong to Churadi class and take णिच्.
As, स्पृहयालुः 'disposed to be desirous of'; गृहयालुः 'disposed to catch hold of or seize'; पतयालुः 'tending or prone to fall'; दयालुः 'compassionate'; निद्रालुः 'disposed to sleep'; तन्द्रालुः 'slothful'; श्रद्धालुः 'full of faith'. See 6.4.55 for adding अय ।
Vart:- The affix आलुच् comes also after the root शीङ् 'to lie down'; as शयालुः 'disposed to lie down'.,