Yusuf Ali
Nor should the Believers all go forth together: if a contingent from every expedition remained behind, they could devote themselves to studies in religion, and admonish the people when they return to them,- that thus they (may learn) to guard themselves (against evil).

Sahih International
And it is not for the believers to go forth [to battle] all at once. For there should separate from every division of them a group [remaining] to obtain understanding in the religion and warn their people when they return to them that they might be cautious.

Shakir
And it does not beseem the believers that they should go forth all together; why should not then a company from every party from among them go forth that they may apply themselves to obtain understanding in religion, and that they may warn their people when they come back to them that they may be cautious?

Pickthall
And the believers should not all go out to fight. Of every troop of them, a party only should go forth, that they (who are left behind) may gain sound knowledge in religion, and that they may warn their folk when they return to them, so that they may beware.

محمد جالندھری
اور یہ تو ہو نہیں سکتا کہ مومن سب کے سب نکل آئیں۔ تو یوں کیوں نہ کیا کہ ہر ایک جماعت میں سے چند اشخاص نکل جاتے تاکہ دین کا (علم سیکھتے اور اس) میں سمجھ پیدا کرتے اور جب اپنی قوم کی طرف واپس آتے تو ان کو ڈر سناتے تاکہ وہ حذر کرتے