Asma ul Husna( 99 NAMES OF ALLAH swt) -1(Ar-Rahman)

1.Ar-Rehman 

 (The Beneficent) 

The Compassionate, The Beneficent,

 The One who has plenty of mercy for the believers and the blasphemers in this world and especially for the

believers in the hereafter.

Surat Ar-Rahman (The Beneficent)

 سورة الرحمن

  الرَّحْمَٰن;عَلَّمَ الْقُرْآن;خَلَقَ الْإِنسَان;عَلَّمَهُ الْبَيَانَ

Arrahma; AAallama alqur-an;Khalaqa al-insan;AAallamahu albayan

The Most Beneficent (Allah)! Has taught (you mankind) the Quran
 (by His Mercy).He created man. He taught him fluent speech.

**Rehman ney;Quran sikaya;Ussi ney insan ko peda kiya 

 Aur ussay bolna sikhaya.**

Word Meaning

الرَّحْمَٰن -Ar rahman -- The Most Beneficent (Allah)

عَلَّمَ الْقُرْآن-Aaallama alquran-- Has taught (you mankind) the Quran (by His Mercy). ;Aalaam--(teach) so past suffix aallama;Aallam --teach so allam +a = tought

خَلَقَ الْإِنسَان-Khalaqa al-insan-- he creatd man

;Khalaq-- create

عَلَّمَهُ الْبَيَانَ AAallamahu albayan

similar Aallam --teach--  but here aaallamahu -- means tought him-- him"hu";AlBayan -- fluent speech

Explanation

The Most Lovingly Beneficent,  The Most Kind and Giving,  The Most Gracious, The Infinitely Good

The One who continually showers all of creation with blessings and prosperity without any disparity. The One who is most kind, loving and merciful.

The One whose endless, loving mercy is perfect and inclusive. The One who is overflowing with the quality of loving mercy and is continually pouring it upon all of creation.

The One whose perfect mercy and loving beneficence endlessly embrace all of creation. The One who loves and cherishes all of creation. The One who is most loving, gentle and merciful.

From the root r-h-m which has the following classical Arabic connotations:

to have tenderness, gentleness, kindness

to love

to have mercy, to have pity

to show favor and goodness

to have all that is required for beneficence

The root r-h-m also indicates womb; meaning that which provides protection and nourishment, and that from which all of creation is brought into being.

Rahmân conveys the idea of fullness and extensiveness, indicating the great quality of love and mercy which engulfs all of creation without any effort or request on our part.

Al-Rahmân is the Beneficent One whose endless outpouring of love and mercy are continually showered upon all of creation.

According to Ibn Qayyum (1350 AD), Rahmân describes the quality of abounding Grace which is inherent in and inseparable from the Almighty.

The Prophet is reported to have said:  "Al-Rahmân is the beneficent 

One whose love and mercy are manifested in the creation of the world 

In the Dictionary of the Holy Qur'ân, Abdul Omar quotes from classical resources:

Rahmân is an active participle noun of the measure fa'lân which 

conveys the idea of fullness and extensiveness and indicates the 

greatest preponderance of the quality of love and mercy which comprehends the entire universe without regard to our effort 

or asking, even before we are born. 

The creation of the sun, the moon, air and water, etc are all there because of this attribute....  the term Rahmân circumscribes the quality of abounding Grace inherent in and inseparable from the Almighty.