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nasai-kubra:2610 – Ismāʿīl b. Masʿūd > Khālid > Shuʿbah > Manṣūr > Mujāhid > Ibn ʿAbbās

"The Messenger of Allah went out to Makkah, and he fasted until he came to 'Usfan. Then he called for a cup and drank." (One of the narrators) Shubah said: "(That was) in Ramadan. Ibn 'Abbas used to say: 'Whoever wants to fast, may fast, and whoever wants to break may break his fast."' (Using translation from Nasāʾī 2290)  

الكبرى للنسائي:٢٦١٠ – أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ قَالَ حَدَّثَنَا خَالِدٌ عَنْ شُعْبَةَ عَنْ مَنْصُورٍ عَنْ مُجَاهِدٍ عَنِ ابْنِ عَبَّاسٍ قَالَ

خَرَجَ رَسُولُ اللهِ ﷺ إِلَى مَكَّةَ «فَصَامَ حَتَّى أَتَى عُسْفَانَ فَدَعَا بِقَدَحٍ فَشَرِبَ» قَالَ شُعْبَةُ فِي رَمَضَانَ فَكَانَ ابْنُ عَبَّاسٍ يَقُولُ مَنْ شَاءَ صَامَ وَمَنْ شَاءَ أَفْطَرَ  

See similar narrations below:

Collected by Nasāʾī, Aḥmad
nasai:2290 – Ismāʿīl b. Masʿūd > Khālid > Shuʿbah > Manṣūr > Mujāhid > Ibn ʿAbbās

"The Messenger of Allah went out to Makkah, and he fasted until he came to 'Usfan. Then he called for a cup and drank." (One of the narrators) Shubah said: "(That was) in Ramadan. Ibn 'Abbas used to say: 'Whoever wants to fast, may fast, and whoever wants to break may break his fast."'  

النسائي:٢٢٩٠ – أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ قَالَ حَدَّثَنَا خَالِدٌ عَنْ شُعْبَةَ عَنْ مَنْصُورٍ عَنْ مُجَاهِدٍ عَنِ ابْنِ عَبَّاسٍ قَالَ

خَرَجَ رَسُولُ اللَّهِ ﷺ إِلَى مَكَّةَ فَصَامَ حَتَّى أَتَى عُسْفَانَ فَدَعَا بِقَدَحٍ فَشَرِبَ قَالَ شُعْبَةُ فِي رَمَضَانَ فَكَانَ ابْنُ عَبَّاسٍ يَقُولُ مَنْ شَاءَ صَامَ وَمَنْ شَاءَ أَفْطَرَ  

ahmad:3162 – Muḥammad b. Jaʿfar And Ḥajjāj > Shuʿbah > Manṣūr > Mujāhid > Ibn ʿAbbās

[Machine] The Messenger of Allah ﷺ went out of the city during Ramadan when he opened Mecca and fasted until he reached Usfan. Then he asked for a cup of water or a container, drank from it, and Ibn Abbas used to say, "Whoever wants to fast, let him fast, and whoever wants to break his fast can do so."  

أحمد:٣١٦٢ – حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ وَحَجَّاجٌ قَالَا حَدَّثَنَا شُعْبَةُ عَنْ مَنْصُورٍ عَنْ مُجَاهِدٍ عَنِ ابْنِ عَبَّاسٍ

أَنَّ رَسُولَ اللهِ ﷺ خَرَجَ مِنَ الْمَدِينَةِ فِي رَمَضَانَ حِينَ فَتَحَ مَكَّةَ فَصَامَ حَتَّى أَتَى عُسْفَانَ ثُمَّ دَعَا بِعُسٍّ مِنْ شَرَابٍ أَوْ إِنَاءٍ فَشَرِبَ فَكَانَ ابْنُ عَبَّاسٍ يَقُولُ مَنْ شَاءَ صَامَ وَمَنْ شَاءَ أَفْطَرَ