[Remember, O Muhammad], when Allah showed them to you in your dream (8:43)

﴿إِذْ يُرِيكَهُمُ اللَّهُ فِي مَنَامِكَ قَلِيلًا ۖ وَلَوْ أَرَاكَهُمْ كَثِيرًا لَّفَشِلْتُمْ وَلَتَنَازَعْتُمْ فِي الْأَمْرِ وَلَٰكِنَّ اللَّهَ سَلَّمَ ۗ إِنَّهُ عَلِيمٌ بِذَاتِ الصُّدُورِ﴾
[ الأنفال: 43]

8:43 [Remember, O Muhammad], when Allah showed them to you in your dream as few; and if He had shown them to you as many, you [believers] would have lost courage and would have disputed in the matter [of whether to fight], but Allah saved [you from that]. Indeed, He is Knowing of that within the breasts.

Remember, O Messenger, Allah’s favour upon you, and upon the believers, when He showed you a dream in which the idolaters were few in number.
You informed the believers about this and they took it as a good sign, and their determination to face the enemy in battle was strengthened.
If Allah had shown the idolaters to you to be many, the determination of your Companions would have become weak and they would have become afraid of fighting.
But Allah saved you all from that and protected them from losing courage.
He therefore made them seem few in number in the eye of His Messenger ( peace be upon him ).
He knows what the hearts contain and what the souls hide.

(And remember) when Allah showed them to you as few in your (i.e. Muhammad's SAW) dream, if He had shown them to you as many, you would surely have been discouraged, and you would surely have disputed in making a decision. But Allah saved (you). Certainly, He is the All-Knower of what is in the breasts.

phonetic Transliteration

Ith yureekahumu Allahu fee manamika qaleelan walaw arakahum katheeran lafashiltum walatanazaAAtum fee alamri walakinna Allaha sallama innahu AAaleemun bithati alssudoori

Abdullah Yusuf Ali - Translation

Remember in thy dream Allah showed them to thee as few: if He had shown them to thee as many, ye would surely have been discouraged, and ye would surely have disputed in (your) decision; but Allah saved (you): for He knoweth well the (secrets) of (all) hearts.

Safi-ur-Rahman al-Mubarakpuri

(And remember) when Allah showed them to you as few in your dream; if He had shown them to you as many, you would surely have been discouraged, and you would surely have disputed in making a decision. But Allah saved (you). Certainly, He is the All-Knower of that is in the breasts.

Page 182 English transliteration