773/1 - Abu Qatādah (may Allah be pleased with him) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “The one who gives people to drink should be the last to drink.” [Al-Tirmidhi; he classified it as Hasan Sahīh (sound and authentic)]
1) A person ought to serve his fellow Muslims and give them to drink, and he should be the last one to drink, thus preferring them over himself.
2) The Shariah urges its followers to train themselves to be patient and to be humble towards others.