Turkish parliament is expected to push through a draft bill to allow troops to be deployed to a Turkish military base in the Gulf state of Qatar as tensions between Doha and other Arab states escalate.
He said in Istanbul that presenting Qatar as a supporter of terrorism is a serious accusation.
The AK Party lawmakers have proposed debating two pieces of legislation to allow Turkish troops to be deployed to Qatar and approve an accord between two countries on military training cooperation, according to AK Party and nationalist opposition officials.
The Turkish military is building a base in the emirate that will eventually host 10,000 troops under a pact in which Turkey agreed to defend Qatar militarily in the future.
President of non-profit Qatar's Friends Group, Bekir Cantemir in a speech drew parallels between the 2013 coup in Egypt, the 2016 coup attempt in Turkey and what is happening in Qatar, accusing foreign powers of trying to destabilize the region.
Turkey's president Tuesday voiced disapproval of the sanctions on Qatar in the wake of several Arab countries severing diplomatic relations with Doha.
Turkey has maintained a base in Qatar since 2014.
Erdogan was careful not to criticise Riyadh, calling on the member nations of the Gulf Cooperation Council to "resolve their differences through dialogue".
Ruling Justice and Development Party (AKP) lawmaker Taha Ozhan said the agreement had passed through the committee stage and would now be discussed by the main parliament.
Saudi Arabia, UAE, and Bahrain have issued two weeks' notice for Qatari nationals to leave their territories, in addition to banning all travel to Qatar by their citizens.
A former ambassador previously said that the base could hold up to 3,000 Turkish soldiers, stationed primarily to conduct joint training exercises.
Al-Jubeir claimed that Qatar was undermining the Palestinian Authority and Egypt with its support of Hamas and the Muslim Brotherhood, which is classified as a terrorist group by the Egyptian authorities.