ENTERING THE KAABA
If you wish to enter the Kaaba, you may do so, but it is not obligatory unless you are a first-time pilgrim (ṣarūrā), for whom entering the Kaaba is essential. Before entering, perform ghusl (ritual purification), and when you step inside, say:
"O Allah سبحانه وتعالى, You have stated in Your Book: 'Whoever enters it is safe.' So grant me safety from Your punishment and from the punishment of Hellfire."
Once inside, pray two units of prayer between the two pillars on the red stone slab. In the first unit, recite Surah Al-Fatiha followed by Surah Ha Meem Al-Sajdah. In the second unit, recite Surah Al-Fatiha and another chapter of the Quran. You may also pray in the corners of the Kaaba.
While inside, say:
"O Allah سبحانه وتعالى, the house is Your house, the sanctuary is Your sanctuary, the safety is Your safety, and the servant is Your servant. You called me to Your house and honored me by letting me visit it. O Allah سبحانه وتعالى, I am Your servant, seeking Your mercy and fearing Your punishment. I ask You to accept my efforts, forgive my sins, and include me among Your forgiven servants."
"O Allah سبحانه وتعالى, whoever prepares, mobilizes, or readies themselves to visit a created being in hopes of their gifts, kindness, or rewards, here I am, O my Master, having prepared, mobilized, and readied myself for Your visit in hopes of Your generosity, kindness, and rewards. So do not disappoint my hope today, O You who never disappoints those who ask of Him, nor diminishes His blessings, nor can any speaker adequately praise Him. I have not come to You with any righteous deed I have performed, nor with any intercession from a created being I relied upon. Instead, I come to You acknowledging my wrongdoing and my misdeeds against myself. I come to You without any proof or excuse, so I ask You—O You who is as such—to grant me my wish and to return me with Your mercy, not deprived nor rejected. O Magnificent One, O Magnificent One, O Magnificent One, I beseech You for something magnificent. I ask You, O Magnificent One, to forgive me my great sins, for no one forgives great sins except the Magnificent One."
And Do not enter the Kaaba with shoes or sandals, and Do not spit or blow your nose inside.