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:6741ʿAbdullāh b. Muslim And Ghayrih > ʿAbd al-ʿAzīz b. Muḥammad > ʿAbdullāh b. Muḥammad b. ʿUmar from his father

[Machine] The Messenger of Allah ﷺ sprinkled (water) on the grave of Ibrahim, and it was the first grave on which he sprinkled. He said when he buried him and finished, "Peace be upon you, and I do not know except that he said and he drew his hand over it." Abu Bakr informed us, Al-Fasawi reported, Al-Lulwi reported, Abu Dawud mentioned it.  

البيهقي:٦٧٤١وَفِيمَا ذَكَرَ أَبُو دَاوُدَ فِي الْمَرَاسِيلِ عَنْ عَبْدِ اللهِ بْنِ مُسْلِمٍ وَغَيْرِهِ عَنْ عَبْدِ الْعَزِيزِ بْنِ مُحَمَّدٍ عَنْ عَبْدِ اللهِ بْنِ مُحَمَّدِ بْنِ عُمَرَ عَنْ أَبِيهِ

أَنَّ رَسُولَ اللهِ ﷺ رَشَّ عَلَى قَبْرِ إِبْرَاهِيمَ وَأَنَّهُ أَوَّلُ قَبْرٍ رُشَّ عَلَيْهِ وَأَنَّهُ قَالَ حِينَ دَفَنَ وَفَرَغَ مِنْهُ سَلَامٌ عَلَيْكُمْ وَلَا أَعْلَمُهُ إِلَّا قَالَ حَثَا عَلَيْهِ بِيَدِهِ أَخْبَرَنَاهُ أَبُو بَكْرٍ أنبأ الْفَسَوِيُّ ثنا اللُّؤْلُؤِيُّ ثنا أَبُو دَاوُدَ فَذَكَرَهُ