اللَّهُ الصَّمَد

Allah is Independent of aII and all are dependent on Him. (The Holy Quran, 112:2)

The word used in the original is samad of which the root is smd. A look at the derivatives in Arabic from this root will show how comprehensive and vast this word is in meaning. (Lexical discussion of the meanings of the derivatives is omitted).
On the basis of these lexical meanings the explanations of the word asSamad in the verse Allah-us-Samad, which have been reported from the Companions, their immediate successors and the later scholars are given below:

Hadrat 'AIi. 'Ikrimah and Ka'b Ahbar: "Samad is he who has no superior. "
Hadrat 'Abdullah bin Mas`ud, Hadrat `Abdullah bin `Abbas and Abu Wail Shaqiq bin Salamah: "The chieftain whose chieftancy is perfect and of the most extraordinary kind. "
Another view of Ibn 'Abbas: "Samad is he to whom the people turn when afflicted with a calamity." Still another view of his: "The chieftain who in his chieftaincy, in his nobility and glory, in his clemency and forbearance,. in his knowledge and wisdom is perfect. "
Hadrat Abu Hurairah: "He who is independent of all and all others are dependent upon him. "