That is, the word al-ḥaqq (“the right”); yet its meaning is sound, as is evident from the combined narrations of the hadith.
The first part of the hadith—fear of Allah and equity—has other chains in the two Ṣaḥīḥs and elsewhere. I have traced some of them in al-Irwāʾ (6/41–42). The purpose here, however, was to give careful attention to tracing the second part and determining its rank. It has thus become clear that it is authentic. All praise is due to Allah, by whose blessing righteous deeds are completed.
3947 — “A Muslim’s reviling his brother is wickedness, fighting him is disbelief, and the inviolability of his property is like the inviolability of his blood.”
It is narrated from ʿAbd Allāh ibn Masʿūd through two chains:
The first: from Ibrāhīm al-Hajrī, from Abū al-Aḥwaṣ, from him. He said: The Messenger of Allah, may Allah’s peace and blessings be upon him, said: ... and he mentioned it.
Aḥmad transmitted it (1/416).
This Ibrāhīm is weak in hadith, but what follows strengthens it.
Through his chain, Abū Nuʿaym transmitted the clause concerning inviolability in al-Ḥilyah. I have traced it, together with other chains—some of which will be mentioned shortly—in Ghāyat al-Marām (203–204/345).
The other: from Layth ibn Abī Sulaym, from Ṭalḥah ibn Muṣarrif, from Masrūq, from ʿAbd Allāh ibn Masʿūd, who said: The Messenger of Allah, may Allah’s peace and blessings be upon him, said: ... and he mentioned it.
Al-Ṭabarānī transmitted it in al-Muʿjam al-Kabīr (10/197/10316).
Layth ibn Abī Sulaym is also weak.