And hold firmly to the rope of Allah all together and do (3:103)

Almuntakhab Fi Tafsir Alquran Alkarim

Hold firmly together and grasp the eternal and unchangeable sublime system of Allah! Lay hold of it with the mind and do not be discordant among yourselves. Call to mind Allah’s favour that you wear. You were enemies and He accorded your differences and you cherished different principles and practices and by His grace you are now in one accord. You were on the edge of the bottomless abyss of Hell and He saved you from eternal disaster. Thus, Allah expounds to you His revelations so that you may hopefully be guided to His path of righteousness

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(3:103) Hold fast together to the cable of Allah *83 and be not divided. Remember the blessing that Allah bestowed upon you: you were once enemies then He brought your hearts together, so that through His blessing you became brothers. You stood on the brink of a pit of fire and He delivered you from it. *84 Thus Allah makes His signs clear to you that you may be guided to the right way. *85

And hold firmly to the rope of Allah all together and do meaning

*83). The expression 'cable of Allah', in this verse, refers to the 'religion of God'. The reason for use of the word 'cable' (habl) is that it both establishes a bond between man and God and joins all believers together. To take a firm hold on this cable means that the believers should attach profound importance to their religion: this should always be the centre of their concerns; they should continually strive to establish it; and the common desire to serve it should make them co-operate with each other.
As soon as Muslims turn their attentions away from the fundamental teachings of their religion and lose sight of establishing its hegemony in life they begin to concern themselves with matters of secondary importance. And, just as they rent the communities of the former Prophets, enticing people away from their true objective in life, so schisms and dissensions are bound to plague their lives. If Muslims do this they are bound to suffer indignity and disgrace both in this world and the Next as happened with the followers of the previous Prophets.
*84). This refers to the state of the Arabs on the eve of the advent of Islam. There were animosities among the tribes which regularly broke out into fighting; every now and then there was much bloodshed. Things had reached a point that the entire Arabian nation seemed to be on the verge of destroying itself. It was due to the blessings of Islam alone that it was saved from being consumed by the fire to which this verse alludes. The people of Madina had embraced Islam some three or four years before these verses were revealed. They had witnessed the blessing of Islam as it unified into one brotherhood the Aws and Khazraj, two tribes which had long been sworn enemies. Moreover, both tribes treated the migrants from Makka in a spirit of sacrifice and love seldom seen even among members of the same family.
*85). If they had eyes to see they could conclude for themselves whether their salvation lay in adhering firmly to this religion or in abandoning it and reverting to their former state; i.e. decide whether their true well-wishers were God and His Messenger or those Jews, polytheists and hypocrites who strove to plunge them back into their former state.
 

And hold firmly to the rope of Allah all together and do meaning in Urdu

سب مل کر اللہ کی رسی کو مضبوط پکڑ لو اور تفرقہ میں نہ پڑو اللہ کے اُس احسان کو یاد رکھو جو اس نے تم پر کیا ہے تم ایک دوسرے کے دشمن تھے، اُس نے تمہارے دل جوڑ دیے اور اس کے فضل و کرم سے تم بھائی بھائی بن گئے تم آگ سے بھرے ہوئے ایک گڑھے کے کنارے کھڑے تھے، اللہ نے تم کو اس سے بچا لیا اس طرح اللہ اپنی نشانیاں تمہارے سامنے روشن کرتا ہے شاید کہ اِن علامتوں سے تمہیں اپنی فلاح کا سیدھا راستہ نظر آ جائے