Sahabi Haris Ibn Malik could see Allah’s Throne with his eyes while he was Alive
Harith ibn Malik al-Ansari passed by the Prophet ﷺ who asked him, “How are you this morning, O Harith?” and he replied, “This morning I am a true believer in Allah.” The Prophet ﷺ said: “Take care of what you say, for everything has a proof to it, so what is the proof of your belief?” He said: “I have turned myself away from this world by keeping awake at night and staying thirsty by day; and I can almost see the Throne of my Lord in full view before me, and I can see the people of the Garden visiting each other, and the people of the Fire wailing to each other.” The Prophet ﷺ said, “O Harith! You have realized (the truth), therefore cling to it.” Some versions add, “(This is) a believer whose heart Allah has illumined.
Recorded by Tabarani in his Mu’jam al-Kabir (3:266 #3367), Quda’i (Musnad Shihab, 2:127 #1028), Abu Nu’aym (Hilya, 1:242), Bazzar (Zawa’id, 1:26 #32), Ibn Abi Shayba in his Musannaf (7:226-27) and his Kitab al- Iman (#114-115)
We mustn’t forget this hadith:
Allah’s Apostle ﷺ said, “Allah said, ‘I will declare war against him who shows hostility to a Wali of Mine. And the most beloved things with which My slave comes nearer to Me, is what I have enjoined upon him; and My slave keeps on coming closer to Me through performing Nawafil (praying or doing extra deeds besides what is obligatory) till I love him, so I become his sense of hearing with which he hears, and his sense of sight with which he sees, and his hand with which he grips, and his leg with which he walks; and if he asks Me, I will give him, and if he asks My protection (Refuge), I will protect him; (i.e. give him My Refuge) and I do not hesitate to do anything as I hesitate to take the soul of the believer, for he hates death, and I hate to disappoint him.
This is a very famous hadith, and it is narrated through multiple narrations, each containing more or less what is mentioned here. Imam Bukhari narrated it in his Sahih (Kitab ar-Riqaq #6021) from Abu Hurayra, Ibn Majah (Kitab al-Fitan, #3979) from Umar, Imam Ahmad in his Musnad (6:256) from A’isha and his Kitab az-Zuhd (p. 61, 65), Ibn Hibban (2:58 #347), Tabarani in his Mu’jam al-Kabir (8:221 #7880; 12:145 #12719) and al-Awsat (1:192 #609; 9:139 #9352), Abdur-Razzaq (11:192-93), Quda’i (Musnad Shihab, 2:327-28 #1456-57), Ibn Abi Dunya in his Kitab al-Awliya (#1, #45) also on the authority of Anas, Abu Nu’aym in his Hilyat al-Awliya’ (1:5; 8:318), Abu Ya’la in his Musnad (12:520) from Maymuna, Bazzar (Zawa’id, 4:241-42, 248), Hakim at-Tirmidhi in his Nawadir al-Usul (Asl #75, #162, #228), Daylami in his Firdaws (3:215 #4472 and 3:216 #4475), Imam Bayhaqi in his Sunan al-Kubra (3:346) and Kitab az-Zuhd (p. 269-70 #696,99), Ibn Shahin (Targhib, #285), Imam Qushayri with his chain in the Risala (p. 292, 348), Ibn ‘Asakir in his Tarikh (7:95), Abu ‘Abdur-Rahman as-Sulami (Forty Hadiths on Tasawwuf, #36), and others. Hadith Sahih.