Narrated Anas ibn Malik:

1) 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(breastfeeding women) 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 صلى الله عليه وسلم فَانْتَهَيْتُ – أَوْ قَالَ فَانْطَلَقْتُ – إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم 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 صلى الله عليه وسلم ‏.‏

Grade : Hasan Sahih (Al-Albani)
Reference : Sunan Abi Dawud 2408
In-book reference : Book 14, Hadith 96
Web Ref: https://sunnah.com/abudawud/14/96

2) It was narrated from Anas bin Malik that:
he came to Prophet in Al-Madinah when he was eating breakfast. The Prophet said to him: “Come and eat the breakfast.” He said: “I am fasting.” The Prophet said to him: “Allah, the mighty and sublime, has waived fasting and half of the prayer for the traveler and for pregnant and breastfeeding women.”

أَخْبَرَنَا عَمْرُو بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، عَنْ وُهَيْبِ بْنِ خَالِدٍ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ سَوَادَةَ الْقُشَيْرِيُّ، عَنْ أَبِيهِ، عَنْ أَنَسِ بْنِ مَالِكٍ، رَجُلٌ مِنْهُمْ أَنَّهُ أَتَى النَّبِيَّ صلى الله عليه وسلم بِالْمَدِينَةِ وَهُوَ يَتَغَدَّى فَقَالَ لَهُ النَّبِيُّ صلى الله عليه وسلم ‏”‏ هَلُمَّ إِلَى الْغَدَاءِ ‏”‏ ‏.‏ فَقَالَ إِنِّي صَائِمٌ ‏.‏ فَقَالَ لَهُ النَّبِيُّ صلى الله عليه وسلم ‏”‏ إِنَّ اللَّهَ عَزَّ وَجَلَّ وَضَعَ لِلْمُسَافِرِ الصَّوْمَ وَشَطْرَ الصَّلاَةِ وَعَنِ الْحُبْلَى وَالْمُرْضِعِ ‏”‏ ‏.‏

Grade : Sahih (Darussalam)
Reference : Sunan an-Nasa’i 2315
In-book reference : Book 22, Hadith 226
Web Ref: https://sunnah.com/nasai/22/226