Ibraheem Ibn Maysarah (d.132H) said:

“Whoever honours an innovator has aided in the destruction of Islam.”

[Reported by Al-Laalikaa’ee, 1/39]

Shaykh ‘Uthaymeen [رحمه الله]: “If you see your brother debating and disputing when the truth is clear and he does not want to follow it, you should flee from him in the same way as you flee from a lion. Tell him that you have nothing more than that to say to him, and let him be.”

[Sharh Hilyah Talib-ul-‘Ilm, Page 28]

Qaasim al-Joo’ee said:

“I advise you with five matters: (1) when you are treated unjustly, do not behave unjustly; (2) when you are praised do not become happy; (3) when you are criticized, do not become upset; (4) when you are not believed, do not become angry; (5) and if the people act deceitfully towards you, do not act deceitfully towards them.”

[Ibn al-Jawzee, Sifatus-Safwaa, 2/200]

Al-Hasan Al-Basree (Rahimahullah) said:

“The life of this world is made up of three days: yesterday has gone with all that was done; tomorrow, you may never reach; but today is for you so do what you should do today.”

[Al-Bayhaqî, Al-Zuhd Al-Kabeer, p.197]

It is reported that ‘Abdullaah Ibn Mas’ood (ra) said:

One of the worst sins is when a man says to his brother, “Fear Allaah,” and he replies, “Worry about yourself.”

[Abu Bakr Al-Daynooree, Al-Mujaalasah Wa Jawâhir Al-‘Ilm, 2619]

Bakr Ibn ‘Abdullaah Al-Muzani said:

“If you see someone older than you then respect him saying, ‘He has beaten me to Islaam and righteous action.’

If you see someone younger than you then respect him saying to yourself, ‘I have beaten him in sins’.”

[Al-Bayhaqi, Al-Zuhd Al-Kabeer, p.100]

Ahmad Ibn Harb said:

“There is nothing more beneficial to a Muslim’s heart than to mix with the righteous and to watch their actions, while nothing is more harmful to the heart than mixing with the sinners and watching their actions.”

[Al-Bayhaqi, Al-Zuhd Al-Kabeer, p.100]

Imam Shafi’ee advised one of his students:

“Do not speak about things that do not concern you, for indeed, every time that you speak a word, it takes control of you and you do not have any control over it!”

[Kitaab Al-Adhkaar, by An-Nawawi]