"Diwali lights & delicious Indian food. Thank you @leehsienloong," PMO India tweeted along with photos showing the two leaders having food together ahead of their bilateral talks tomorrow.
"The hospitable host & the happy guest...PM @narendramodi at Little India. Chai Pe Charcha with @leehsienloong," said another tweet.
Modi, who has a penchant for clicking selfies with leaders on foreign tours, continued the trend on the first day of his maiden visit to Singapore by clicking a selfie with Lee and his wife Ho Ching.
Earlier today, Modi delivered a 20-minute '37th Singapore Lecture - India's Singapore Story' - soon after his arrival here during which Lee was also present.
The Indian prime minister flew into Singapore from Malaysia in the second and final leg of his four-day visit to southeast Asia.
Little India - a precinct of Indian-origin businesses, eateries and pubs where South Asians working in Singapore spend their day off - was the scene of the December 8, 2013 riots, the city-state's worst outbreak of violence in over 40 years.