Narrated Anas ibn Malik:

A man from Banu Abdullah ibn Ka'b brethren of Banu Qushayr (not Anas ibn Malik, the well-known Companion), said: A contingent from the cavalry of the Messenger of Allah ﷺ raided us. I reached (for he said went) to the Messenger of Allah ﷺ who was taking his meals. He said: Sit down, and take some from this meal of ours. I said: I am fasting, he said: Sit down, I shall tell you about prayer and fasting. Allah has remitted half the prayer to a traveller, and fasting to the traveller, the woman who is suckling an infant and the woman who is pregnant, I swear by Allah, he mentioned both (i.e. suckling and pregnant women) or one of them. I was grieved for not taking the food of the Messenger of Allah ﷺ.

حَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ، حَدَّثَنَا أَبُو هِلاَلٍ الرَّاسِبِيُّ، حَدَّثَنَا ابْنُ سَوَادَةَ الْقُشَيْرِيُّ، عَنْ أَنَسِ بْنِ مَالِكٍ، - رَجُلٍ مِنْ بَنِي عَبْدِ اللَّهِ بْنِ كَعْبٍ إِخْوَةِ بَنِي قُشَيْرٍ - قَالَ أَغَارَتْ عَلَيْنَا خَيْلٌ لِرَسُولِ اللَّهِ ﷺ فَانْتَهَيْتُ - أَوْ قَالَ فَانْطَلَقْتُ - إِلَى رَسُولِ اللَّهِ ﷺ وَهُوَ يَأْكُلُ فَقَالَ " اجْلِسْ فَأَصِبْ مِنْ طَعَامِنَا هَذَا " . فَقُلْتُ إِنِّي صَائِمٌ . قَالَ " اجْلِسْ أُحَدِّثْكَ عَنِ الصَّلاَةِ وَعَنِ الصِّيَامِ إِنَّ اللَّهَ تَعَالَى وَضَعَ شَطْرَ الصَّلاَةِ أَوْ نِصْفَ الصَّلاَةِ وَالصَّوْمَ عَنِ الْمُسَافِرِ وَعَنِ الْمُرْضِعِ أَوِ الْحُبْلَى " . وَاللَّهِ لَقَدْ قَالَهُمَا جَمِيعًا أَوْ أَحَدَهُمَا قَالَ فَتَلَهَّفَتْ نَفْسِي أَنْ لاَ أَكُونَ أَكَلْتُ مِنْ طَعَامِ رَسُولِ اللَّهِ ﷺ .