Not graded
Bulugh al-Maram 352b
وَفِي رِوَايَةٍ لَهُمَا : { وَرَكْعَتَيْنِ بَعْدَ اَلْجُمْعَةِ فِي بَيْتِهِ } . 1
1 - صحيح . رواه البخاري ( 937 ) ، ومسلم ( 729 ) وساقها الحافظ بالمعنى .
Another narration of both (al-Bukhari and Muslim) has:
'two Rak'at after Jumu'ah prayer in his house.'
Cited in Bulugh al-Maram (No. 352b).