Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:3388Abū Aḥmad al-Mihrajānī > Abū Bakr b. Jaʿfar > Muḥammad b. Ibrāhīm > Ibn Bukayr > Mālik > Balaghah

[Machine] That Abdullah ibn Abbas used to bleed and then he would go out to wash the blood, then he would return to build on what he had prayed.  

البيهقي:٣٣٨٨وَأَخْبَرَنَا أَبُو أَحْمَدَ الْمِهْرَجَانِيُّ أنبأ أَبُو بَكْرِ بْنُ جَعْفَرٍ ثنا مُحَمَّدُ بْنُ إِبْرَاهِيمَ ثنا ابْنُ بُكَيْرٍ ثنا مَالِكٌ أَنَّهُ بَلَغَهُ

أَنَّ عَبْدَ اللهِ بْنَ عَبَّاسٍ كَانَ يَرْعُفُ فَيَخْرُجُ فَيَغْسِلُ الدَّمَ ثُمَّ يَرْجِعُ فَيَبْنِي عَلَى مَا قَدْ صَلَّى  


See similar narrations below:

Collected by Mālik
malik:2-48Mālik > Balaghah

Yahya related to me from Malik from Nafi that Abdullah ibn Abbas used to have nose-bleeds and would leave to wash off the blood. He would then return and complete his prayer.  

مالك:٢-٤٨وَحَدَّثَنِي عَنْ مَالِكٍ أَنَّهُ بَلَغَهُ

أَنَّ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ كَانَ يَرْعُفُ فَيَخْرُجُ فَيَغْسِلُ الدَّمَ عَنْهُ ثُمَّ يَرْجِعُ فَيَبْنِي عَلَى مَا قَدْ صَلَّى