The Prophet Muhammad (p.b.u.h.) said:
“There are seven whom Allah will shade in His Shade on the Day when there is no shade except His Shade:
1. A just ruler.
2. A youth who grew up in the worship of Allah, the Mighty and Majestic;
3. A man whose heart is attached to the mosques;
4. Two men who love each other for Allah’s sake, meeting for that and parting upon that;
5. A man who is called by a woman of beauty and position (for illegal intercourse), but be says: ‘I fear Allah’,
6. A man who gives in charity and hides it, such that his left hand does not know what his right hand gives in charity;
7. A man who remembered Allah in private and so his eyes shed tears.'”
(Abu Hurairah & collected in Saheeh al-Bukhari (English trans.) vol.1, p.356, no.629 & Saheeh Muslim (English trans.) vol.2, p.493, no.2248)
In this beautiful Hadith, the Prophet (p.b.u.h.) spoke about small acts of worship which result in such a huge reward:
Shade on the Day when there will be no shade except His Shade. This may not seem like much at first but then reflect upon the following Hadith
‘On the Day of Resurrection, the sun would draw so close to the people that there would be left a distance of only one mile. The people will be submerged in perspiration according to their deeds, some up to their ankles, some up to their knees, some up to the waist and some would have the bridle of perspiration and, while saying this, the Messenger of Allah put his hand towards his mouth.’
(al Miqdaad ibn Aswad & collected in Saheeh Muslim (Eng. trans) vol.4, p.1487-8, no. 6852}.