Tirukkural-On Virtue-An Open House Or Hospitality-Kural 87

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The worth of one's hospitality, is measured only by the quality Of the guests, who have been entertained.

Even if the act of hospitality is relatively small, it is likely to assume considerable value, because of the person to whom it is extended qualitatively, because of the circumstances under which hospitality was given.

Hospitality itself is referred to here as a 'yaga' or one of the great sacrifices of life Vaelvi

'Naladiar' 38 is relevant here.

Urakkam thunaiyadhoar aalamvith theendi
Irappa nilarpayath thaa ang-karapayanum
thaan siriyadhaayinum thakaar kaipattakaal
vaan siridhaaip poarthu vidum.