Sayyiduna Nubayshah (may Allah be pleased with him) said: A man called out to the Messenger of Allah (peace and blessings be upon him): In the Jahiliyyah we used to slaughter animals in the month of Rajab; what do you (peace and blessings be upon him) command us concerning it? He (peace and blessings be upon him) said: "Slaughter for Allah in whichever month you wish, feed people, and attain righteousness." The man said: In the Jahiliyyah we used to slaughter the fara'; what do you (peace and blessings be upon him) command us concerning it? He (peace and blessings be upon him) said: "In every grazing flock there is a fara'. Feed it from your livestock, and when it becomes a full-grown camel, slaughter it and give its meat in charity." Khalid said: I think it is to be given in charity to travellers; this is better.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19339