Adam Clarke on Luke 7:44

Thou gavest me no water - In this respect Simon was sadly deficient in civil respect, whether this proceeded from forgetfulness or contempt. The custom of giving water to wash the guest's feet was very ancient. See instances in Gen 18:4; Gen 24:32; Jdg 19:21; 1Sam 25:41. In Hindoostan it is the custom, that when a superior enters the house of an inferior, the latter washes his feet, and gives him water to rinse his mouth before he eats. See Ayeen Akbery, vol. iii. p. 226.