English Translation of Hadith
Hazrat Abu Musa (May Allah be pleased with him) reported: The Messenger of Allah [SAWW](PBUH) said, "The similitude of guidance and knowledge with which Allah has sent me is like a rain which has fallen on some ground. A fertile part of earth has absorbed water and brought forth much grass and herbs. Another part, which is solid, held the water and Allah benefits men thereby, who drank and gave others to drink, and used it for irrigation. But some of it has fallen on a portion of sandy land which neither retains the water nor produces herbage. Such is the likeness of the man who understands the religion of Allah and who gets benefit of what Allah has sent me with; he learns and teaches others. It is also the likeness of the man who neither raises his head on that account (meaning he does not benefit from what the Prophet [SAWW](PBUH) was sent with) nor accepts Allah’s Guidance with which I am sent".
[Al-Bukhari Book 01, Chapter 03, Hadith # 079]
Lesson: as mentioned above in Surah As-Sajda Ayat 27. “ they not seen how Allah drive water (rain clouds) to the dry land without any vegetation” In this Hadith the guidance and knowledge which was sent to mankind through the Prophet (PBUH) is compared to the rain which is beneficial, because this knowledge resuscitates the dead hearts as does the rain to a barren land. One who makes use of this knowledge is likened to a good soil, and one who acquires this knowledge and imparts it to others but does not put it into practice is considered akin to a hard land which holds water and other people utilize it. A person who neither learns it nor acts upon it is like a desolate land which neither holds water nor produces anything. Such a person is the worst of all because he neither himself benefits from it nor lets others make use of it. This Hadith induces one to acquire knowledge, impart it to others, put it into actual practice and warns people from neglecting this duty.