King Abdullah, 90, passed away today and was succeeded by his 79-year-old half-brother Salman as the new ruler.
"During King Abdullah's rule, the foundation for the India-Saudi Arabia strategic partnership was laid and bilateral ties gained momentum as reflected in the Delhi Declaration (2006) and Riyadh Declaration (2010)," India's Ambassador to Saudi Arabia Hamid Ali Rao told PTI.
"He (King Abdullah) was a great friend of India," he said.
He made a historic visit to India in January 2006 as the Chief Guest of Republic Day celebrations and the trip opened a new chapter in the Indo-Saudi bilateral relations.
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King Abdullah was the first Saudi king to visit India in 51 years.
During the visit, King Abdullah referred to India as his "second home" and signed the 'Delhi Declaration', the first such bilateral document ever inked by a Saudi King which provided a comprehensive road map for bilateral relations.
"Bilateral trade increased enormously...He (King Abdullah) signed the Delhi Declaration during his visit which elevated our relations to a new height so it was during his time that the India-Saudi Arabia relations strengthened very much," Indian Consul General in Jeddah B S Mubarak told PTI.
"He (King Abdullah) is definitely a great friend of India. He considered India to be very close to his heart. The number of Indians that we have now here -- 30 lakhs (the largest expatriate community in Saudi Arabia), it is all because of his policies," he said.
In recent years, there has been significant progress in bilateral cooperation in key areas of mutual interest, including energy security, trade and infrastructure development projects.