Anas reported that the Messenger of Allah ﷺ observed prayer on the grave.  

أَنَّ النَّبِيَّ ﷺ صَلَّى عَلَى قَبْرٍ  

That the Prophet prayed at the grave of a woman after she had been buried.  

أَنَّ النَّبِيَّ ﷺ صَلَّى عَلَى قَبْرِ امْرَأَةٍ بَعْدَ مَا دُفِنَتْ  

[Machine] That the Messenger of Allah ﷺ prayed for the person at the grave after they were buried.  

أَنَّ رَسُولَ اللهِ ﷺ صَلَّى عَلَى صَاحِبِ قَبْرٍ بَعْدَ مَا دُفِنَ  

Anas reported that the Messenger of Allah ﷺ observed prayer on the grave. (Using translation from Muslim 955)  

أَنَّ النَّبِيَّ ﷺ صَلَّى عَلَى قَبْرٍ  

It was narrated from Ibn ‘Umar that the Prophet ﷺ offered the funeral prayer for Najashi and said four Takbir. (Using translation from Ibn Mājah 1538)   

أَنَّ النَّبِيَّ ﷺ «صَلَّى عَلَى قَبْرِ فُلَانَةَ فَكَبَّرَ أَرْبَعًا»  

I said to Sha'bi: Who narrated it to you? He said: An authentic one, 'Abdullah b. 'Abbas. This is the word of a hasan hadith. In the narration of Ibn Numair (the words are): The Messenger of Allah ﷺ went to the grave which had been newly prepared and prayed over it, and they also prayed who were behind him and he recited four takbirs. I said to 'Amir: Who narrated it to you? He said: An authentic one who saw him, i e. Ibn 'Abbas. (Using translation from Muslim 954a)  

أَنَّ النَّبِيَّ ﷺ «صَلَّى عَلَى قَبْرٍ بَعْدَمَا دُفِنَ»  

That the Prophet prayed at the grave of a woman after she had been buried. (Using translation from Nasāʾī 2025)  

أَنَّ النَّبِيَّ ﷺ «صَلَّى عَلَى قَبْرِ امْرَأَةٍ بَعْدَمَا دُفِنَتْ»  

[Machine] That the Prophet ﷺ prayed on a grave and performed four takbirs upon it.  

أَنَّ النَّبِيَّ ﷺ صَلَّى عَلَى قَبْرٍ فَكَبَّرَ عَلَيْهِ أَرْبَعًا  

"عن أنس: أنَّ النبيَّ ﷺ صَلَّى على قبرٍ بعدَ مَا دُفِنَ".  

"صَلَّى النَّبىُّ ﷺ عَلَى قَبْرٍ بَعْدَ ما دُفنَ".