Sahih al-Bukhari 4210
Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · Hadith 250
Hadith text
Narrated Sahl bin Sa`d:On the day of Khaibar, Allah's Messenger (ﷺ) said, "Tomorrow I will give this flag to a man through whose hands Allah will give us victory. He loves Allah and His Apostle, and he is loved by Allah and His Apostle." The people remained that night, wondering as to who would be given it. In the morning the people went to Allah's Messenger (ﷺ) and everyone of them was hopeful to receive it (i.e. the flag). The Prophet said, "Where is `Ali bin Abi Talib?" It was said, "He is suffering from eye trouble O Allah's Apostle." He said, "Send for him." `Ali was brought and Allah's Messenger (ﷺ) spat in his eye and invoked good upon him. So `Ali was cured as if he never had any trouble. Then the Prophet (ﷺ) gave him the flag. `Ali said "O Allah's Messenger (ﷺ)! I will fight with them till they become like us." Allah's Messenger (ﷺ) said, "Proceed and do not hurry. When you enter their territory, call them to embrace Islam and inform them of Allah's Rights which they should observe, for by Allah, even if a single man is led on the right path (of Islam) by Allah through you, then that will be better for you than the nice red camels
Sahl bin Sa'd bataate hain: Khaibar ke din, Allah ke Rasool ne kaha, "Kal main yeh jhanda ek aise shaks ko dunga jinke haathon Allah humein fatah dega. Woh Allah aur uske Rasool se pyaar karta hai, aur woh Allah aur uske Rasool ke pyare hain." Log us raat yeh sochte rahe ke kise jhanda diya jaayega. Subah log Allah ke Rasool ke paas gaye aur har koee ummeed karta tha ke use yeh milega. Nabi ne pucha, "Ali bin Abi Talib kahaan hain?" Unse kaha gaya, "Unhe aankh ki takleef hai, Aye Allah ke Nabi." Unhone kaha, "Unke liye bhejo." Ali ko laaya gaya aur Allah ke Rasool ne unki aankh mein thooka aur unke liye achhi dua ki. Isliye Ali theek ho gaye mano unhe kabhi koee takleef hi nahi thi. Phir Nabi ne unhe jhanda diya. Ali ne kaha, "Ya Allah ke Rasool! Main unse (dushman se) jung karunga jab tak woh humare jaise ban jaen." Allah ke Rasool ne kaha, "Aage badho aur jaldbaazi mat karo. Jab tum unki zameen mein daakhil ho, unhe Islam qubool karne ki dawat do aur unhe Allah ke haqq batao jo unpar farz hain, kyunke, Allah ki qasam, agar ek shaks bhi tumhare zariye sahi raste par Allah dwaara le jaya jata hai, yeh tumhare liye khoobsurat laal unton se behtar hoga."
Sahih al-Bukhari 4210 · Book 64, Hadith 250
Read all hadith in Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)