Hasan Al Basri (rahimahullah) said: “The tongue of a wise person is behind his heart. When a [thought] presents itself, he inspects. If it will be beneficial for him he will utter it but if it is against him, he will refrain [from uttering it], whereas the tongue of a fool is in front of his heart. When he decides to say something, he utters it regardless of whether it will harm him or benefit him."
Hasan Al Basri (rahimahullah) said: “The tongue of a wise person is behind his heart. When a [thought] presents itself, he inspects. If it will be beneficial for him he will utter it but if it is against him, he will refrain [from uttering it], whereas the tongue of a fool is in front of his heart. When he decides to say something, he utters it regardless of whether it will harm him or benefit him."