Chosen Islamic Manners

'Befriend only a believer, and let only a pious eat from your food.' (Ahmed)
*The one you accompany should also be sane, intellectual, kind and pious.
*The cause for befriending an individual should be only for the sake of Allah. The Prophet () said:

'Indeed Allah says on the Day of Resurrection, where are they who loved each other for My sake? By My honor, I will shade them in the shade of My throne, on a Day in which there is no shade but My shade.' (Muslim)

The Prophet () said:

'Allah, the Exalted, says: 'My love is due to those who love each other for the sake of Allah, and those who visit each other for the sake of Allah, and sit with each other for the sake of Allah, and to those who give to each other for My sake.' (Ahmed)
*One should smile in the face of his brother, be kind towards them for the Prophet () said:

‘Do not belittle a good thing even if it is to meet your brother with a smiling face.’ (Muslim)

The Prophet () said:

‘Smiling in the face of your brother is a charity.’

(Saheeh al-Adab)
*One should be keen on giving advice to his brothers. The Prophet () would mention this in the Pledge of Allegiance he took from his companions. Jarir b. Abdullah () said:

‘I gave the pledge of Allegiance to the Messenger of Allah () to perform prayers, to give the Zakah and to give advice and sincere counseling to every Muslim.’ (Bukhari & Muslim)

Mu’adh () said: ‘Woe to you, do not sit with someone except if you can benefit from him in terms of knowledge.’