When we say Imam Ali (as) had his rights usurped, what stopped him from rising up with the sword to reclaim his rights?

“Abu Ja’far (as) has said that: ‘The people, when they did what they did, they pledged their allegiances to Abu Bakr, nothing prevented Ameer al-Mu’mineen (as) calling the people to himself except that he looked around at the people and feared for them that they would renege from Islam, and resort to worshipping the idols and not testify that there is no god except Allah (swt) and that Mohammed (sawa) is the Messenger of Allah, and it was more beloved to him (as) than he should agree with them upon what they had done rather than them reneging against the whole of Islam.
But rather, destroyed is the one who does what they did. So, as for the one who did not do that, and entered into what the people had entered into without knowledge or enmity against Ameer al-Mu’mineen (as), so for that they have neither blasphemed nor exited from Islam, and it is for that reason that Ali (as) concealed his matter, and had to pledge allegiance unwillingly, when he did not find any helpers’.”

Sanad: Humeyd Bin Ziyad, from Al-Hassan Bin Muhammad Al-Kindy, from someone else, from Abaan Bin Usmaan, from Al-Fazel, from Zurara

Source: Kitab Al-Kaafi, Volume 8, Hadith #14902

– Bahboody – Sahih بهبودي صحيح
– Majlisi, As Reliable مجلسي كالموثق [Mira’at Al-Uqool, Alammah Majlisi, Volume 26, Page 326]

حميد بن زياد. عن الحسن بن محمد الكندي، عن غير واحد. عن أبان بن عثمان، عن الفضيل عن زرارة، عن أبي جعفر (عليه السلام) قال: إن الناس لما صنعوا ما صنعوا إذ بايعوا أبا بكر لم يمنع أمير المؤمنين (عليه السلام) من أن يدعو إلى نفسه إلا نظرا للناس و تخوفا عليهم أن يرتدوا عن الاسلام فيعبدوا الأوثان ولا يشهدوا أن لا إله إلا الله وأن محمدا رسول الله (صلى الله عليه وآله) وكان الاحب إليه أن يقرهم على ما صنعوا من أن يرتدوا عن جميع الاسلام وإنما هلك الذين ركبوا ما ركبوا. فأما من لم يصنع ذلك ودخل فيما دخل فيه الناس على غير علم ولا عداوة لأمير المؤمنين (عليه السلام) فإن ذلك لا يكفره ولا يخرجه من الاسلام ولذلك كتم علي (عليه السلام) أمره وبايع مكرها حيث لم يجد أعوانا

Abu Ja’far (as) has said: ‘Nothing prevented Ali (as) from calling the people to himself except that they would have ended up straying from Islam and not returning. It was more beloved to him than calling them, as they would refuse him, and thus they would have become Infidels, all of them’.

Sanad: My (al-saduq) father said, ‘Sa’ad bin Abdullah narrated to us, from Ahmad bin Muhammad ibn Isa, from Al Abbas bin marouf, from Hamaad bin Isa, from Hareyz, from Bureyd bin Muawiya who said the above hadith

Source: `ilal al-Shara’i`, Volume 1, Chapter 122, Hadith #10 (See Image below)

Grading: al-Mohsini has graded it reliable [Mu`jim al-Ahaadeeth al-Mu`tabara, Volume 2, Page 141-142]