حَدَّثَنَا أَبُو بِشْرٍ، بَكْرُ بْنُ خَلَفٍ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، عَنْ خَالِدٍ الْحَذَّاءِ، عَنْ أَبِي الْمَلِيحِ، عَنْ نُبَيْشَةَ، قَالَ نَادَى رَجُلٌ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ فَقَالَ يَا رَسُولَ اللَّهِ إِنَّا كُنَّا نَعْتِرُ عَتِيرَةً فِي الْجَاهِلِيَّةِ فِي رَجَبٍ فَمَا تَأْمُرُنَا قَالَ ‏"‏ اذْبَحُوا لِلَّهِ عَزَّ وَجَلَّ فِي أَىِّ شَهْرٍ مَا كَانَ وَبَرُّوا اللَّهَ وَأَطْعِمُوا ‏"‏ ‏.‏ قَالُوا يَا رَسُولَ اللَّهِ إِنَّا كُنَّا نُفْرِعُ فَرَعًا فِي الْجَاهِلِيَّةِ فَمَا تَأْمُرُنَا قَالَ ‏"‏ فِي كُلِّ سَائِمَةٍ فَرَعٌ تَغْذُوهُ مَاشِيَتُكَ حَتَّى إِذَا اسْتَحْمَلَ ذَبَحْتَهُ فَتَصَدَّقْتَ بِلَحْمِهِ - أُرَاهُ قَالَ - عَلَى ابْنِ السَّبِيلِ فَإِنَّ ذَلِكَ هُوَ خَيْرٌ ‏"‏ ‏.‏

It wasnarrated that Nubaishah said: “A man called the Messenger ofAllah(PBUH) and said: ‘O Messenger of Allah, we used to sacrifice the‘Atirah during the Ignorance days in Rajab,; what do you command ustodo?’ He said: “Sacrifice to Allah whatever month it is, dogood forthe sake of Allah and feed (the poor).’ They said: ‘OMessenger ofAllah, we used to sacrifice the Far’ah during theIgnorance days; whatdo you command us to do?’ He said: ‘Forevery Sa’imah* (flock ofgrazing animals), feed the firstborn asyou feed the rest of yourflock until it reaches an age where itcould be used to carry loads,then sacrifice it, and give its meat incharity’ – I** think he said –‘to the wayfarer, for that isgood.’” Translation Not Available

Book Ref: Sunan Ibn Majah Book 27 Hadith 3167
Web Ref:  Sunan Ibn Majah Vol 4 Book 27 Hadith 3167