I have read somewhere that a scholar said that the rooh (soul) is deaf, dumb and blind.

Answer

Deafness, dumbness and blindness are attributes of physical beings such as human beings, jinn, animals and innumerable other physical species of creation. The Rooh is not a physical being, hence it is not predicated with the attributes of physical beings. The Rooh is a pure spiritual substance which had inhabited the celestial realms since its creation long before the creation of physical man.

The Rooh by itself is an intelligent entity. After its creation it was perpetually absorbed in contemplation of Allah Azza Wa Jal. Such contemplation is its ibaadat. When the Rooh was ordered to enter and enliven the physical and lifeless sand-body of Hadhrat Aadam (alayhis salaam), it found it absolutely intolerable. On its first entry into the lifeless sand-statue, it expressed its absolute horror and abhorrence for the physical form which would become its abode. It initially expressed its refusal to remain in the lifeless sand-statue. But, by Allah's command, the Rooh had no option but to make the lifeless physical statue its new abode.

The Rooh's spiritual properties and powers degenerated and were overshadowed by the material body in which it was commanded to take up residence. Its new habitat drastically weakened it, and in most human beings the Rooh has become subservient to the nafs (the abode of the carnal instincts in man). By undergoing tarbiyat (spiritual training), the Rooh is able to reassert its original powers and properties to a great degree. This is manifested in the Ambiya and Auliya. In fact, as a consequence of extreme rigorous training which involves total denial of the carnal instincts, even the souls of kuffaar attain spiritual powers. This is seen in some of the yogis.

The Rooh itself is an intelligent spiritual being. Very little understanding of its composition and attributes has been given to us. In this regard the Qur'aan Majeed says:

"They ask you (O Muhammad!) about the Rooh. Say: 'The Rooh is of My Rabb's command. "You have not been given knowledge of it, but a little…