Mustahabb is an Islamic term referring to recommended, favored or virtuous

Virtue

Virtue is moral excellence. A virtue is a positive trait or quality subjectively deemed to be morally excellent and thus is valued as a foundation of principle and good moral being....

 actions.

Definition

Mustahabb actions are those whose status of approval in Islamic law (ahkam

Ahkam

Ahkam is a reference to the Islamic commandments, derived and understood from religious jurisprudence resources . A law, value, ordinance or ruling of Shari'ah . In order to arrive at any new legal doctrine, or hukm, one must employ a systematic methodology by which to extract meaning from the...

) falls between mubah

Mubah

'Mubah' is an Islamic Arabic term denoting an action as neither forbidden nor recommended, and so religiously neutral. This is one of the degrees of approval in Islamic law....

(neutral) and wajib (actions which must be performed). One definition is "duties recommended, but not essential; fulfilment of which is rewarded, though they may be neglected without punishment" (Reuben Levy, The Social Structure of Islam, p. 202). Synonyms of mustahabb can be masnun or mandub. The opposite of mustahabb is makruh

Makruh

In Islamic terminology, something which is makruh is a disliked or offensive act . Though it is not haram and therefore not a sin, a person who abstains from this action will be rewarded. Muslims are encouraged to avoid such actions when possible...

.

Examples

• As-Salamu Alaykum
  As-Salamu Alaykum
  As-Salāmu `Alaykum is a traditional Muslim greeting, often translated as Peace be upon you.-Usage:*In Arabia, the greeting is associated with shaking right hands and then possibly two or three light cheek to cheek kisses....
  
  , a traditional Islamic greeting
  Greeting
  Greeting is an act of communication in which human beings intentionally make their presence known to each other, to show attention to, and to suggest a type of relationship or social status between individuals or groups of people coming in contact with each other...
  
   in Arabic
• Sadaqah
  Sadaqah
  or Saddka is an Islamic term that means "voluntary charity".This concept encompasses any act of giving out of compassion, love, friendship or generosity.-Hadith on Sadaqah/Saddka:...
  
  
• Umrah
  Umrah
  The Umrah or is a pilgrimage to Mecca, Saudi Arabia, performed by Muslims that can be undertaken at any time of the year. In Arabic, Umrah means "to visit a populated place"...