Hadithcore
Riyad as-Salihin, 1013

Anas (May Allah be pleased with him) reported:

A man said: "O Messenger of Allah! I love Surat-Al-Ikhlas <b>[Say: He is Allah, (the) One]</b>." He (ﷺ) said, "Your love for it will admit you to Jannah." <b>[At-Tirmidhi]</b>.

وعن أنس رضي الله عنه أن رجلا قال‏:‏ يارسول الله إني أحب هذه السورة ‏"‏قل هو الله أحد‏"‏‏:‏‏"‏إن حبها أدخلك الجنة‏"‏ ‏(‏‏(‏رواه الترمذي وقال‏:‏ حديث حسن- رواه البخاري في صحيحه تعليقًا‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 8, Hadith 23
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) Love for this Surah which includes Tawhid is a reason for entering Paradise. Indeed, Tawhid is the key to the door to Paradise.<br> 2) Good deeds lead to Paradise, and the best deed is establishing Tawhid in one’s life.