The head of the Lebanese State denounced that the Prime Minister, who resigned on November 4, is being held in Riyadh, Saudi Arabia, and a few minutes later, Hariri replied that he will return.
Hariri resigned as Lebanon's prime minister on November 4 in a video broadcast from Saudi Arabia and has yet to return to Lebanon.
Speculation has swirled around the fate of Hariri, who is a Saudi citizen and grew up in the kingdom, with Lebanon's President Michel Aoun accusing Saudi Arabia of "detaining" him.
Shortly after Aoun's remarks, Hariri tweeted that he was "very, very well" and that he would return to "the beloved Lebanon". Hariri's father, Rafik Hariri, was assassinated in a auto bomb explosion in 2005, which officials believe was planted by Hezbollah agents, and Hariri said he feared the same fate.
Hassan Nasrallah, the leader of Lebanon's Iran-backed militant group Hezbollah, has made the same accusation.
Saudi Arabia has always been considered Hariri's main external supporter.
"Only a pernicious outside actor, such as Iran and its surrogate, Hezbollah, can upset the balance as this group now seeks to take control of Lebanon".
Hezbollah has said Saudi Arabia forced Hariri to resign in order to bring down his coalition government, which includes the group. "Lebanon is kidnapped by the militias of Hezbollah and behind it is Iran".
Bahaa Hariri, right, and Saad Hariri, sons of slain Lebanese former Prime Minister Rafik Hariri, visit the scene where their father was assassinated in Beirut, Lebanon, February 19, 2005.
Velayati went on to say that Hariri's resignation is an internal issue and expressed hope that Hariri would review his decision and remain in his job.
Lebanese Foreign Minister Gebran Bassil said in Paris on Tuesday that any punitive sanctions by Saudi Arabia on Lebanon would impact the region and Syrian refugees in the country.
"I want to repeat and affirm that I am perfectly fine and I will return, god willing, to dear Lebanon as I promised you, you'll see", Hariri wrote on Twitter on Wednesday.
As it was unclear when Hariri will leave Saudi Arabia to return home, the timing of the meeting "may be adjusted", the aide said.