In the room of tu (a dental) when the letter la follows, one homogenous with the latter is substituted.,
Thus अग्निचित् + लुनाति = अग्निचिल्लुनाति, सोमसुल्लुनाति; भवान् + लुनाति = भवाँल्लुनाति, महाँल्लुनाति ॥ Here त has been changed to pure ल, while the dento-nasal न् is changed to a nasal लँ ॥,