WASHINGTON, June 18.-Foreign Minister Swaran Singh of India said here today that the international community must "utilize its leverage to compel Pakistan to work out a political solution" for the crisis in East Pakistan and abandon "the military method."

He met with President Nixon and Secretary of State William P. Rogers here this week after having carried India's diplomatic campaign on the Pakistani question to Moscow, Bonn, Paris and Ottawa.

Before leaving for London, he said in an interview that any form of military aid to Pakistan would only strengthen its military rulers in attempts to "subvert democracy" and "undo the results of the elections" last December. This was a reference to the election of a constitutional assembly, in which the Awami League of East Pakistan won a commanding majority.

Also today, authoritative sources here reported that a survey team of the International Bank for Reconstruction and Development, or World Bank, and the International Monetary Fund had counseled in a preliminary secret recommendation that the International Consortium studying Pakistan's economic needs refrain from providing assistance to the regime of President Agha Mohammad Yahya Khan.

CONSORTIUM TO MEET

The survey team, now in Islamabad, Pakistan's capital, is scheduled to present its full report to the 11-nation consortium, which includes the United States, at a meeting in Paris next Monday.

It was understood that the mission, headed by Peter Cargill, a Briton, had urged that the consortium's aid to Pakistan, running about $500-million a year, be stopped until President Yahya Khan had found the "political solution" for East Pakistan.

The United States, which so far has taken the view that economic aid should not be reduced for political reasons, provides $200 million of the annual package The Nixon Administration, however, has also pressed Pakistan to solve the East Pakistani crisis politically through the granting of autonomy to the region and the restoration to power of the Awami League.

The Indian Foreign Minister's visit was made as concern continued to mount here that the flow of East Pakistani refugees to India might result in military clashes between India and Pakistan. The number of refugees now in India was put at six million by Mr. Singh. He said that they continued to enter at the rate of 100,000 daily.

PRESSURES CITED

United States officials said that Mr. Singh had indicated in his talks here that the point may already have been reached where the Indian State of West Bengal could no longer withstand the political, economic and social pressures created by the refugees.

In the interview, Mr. Singh insisted that relief to refugees was only a palliative" and that "the root cause has to be tackled."

He said that the first essential step was the creation of conditions in East Pakistan that would allow the flow of refugees to be halted,

On behalf of the Indian Government, Mr. Singh said, he had urged the international community to come up with "a clear expression of disapproval of the military repression by the rulers of Pakistan."

He said that the community should also insist publicly on the implementation by Pakistan of measures conducive to the refugees' return. Finally, he said, all forms of aid should be refused.

"My thesis is that to give aid to the Pakistani military rulers before they apply correctives [in East Pakistan] is interference in Pakistan's domestic affairs," he said. "It is giving aid to a minority, a dictatorial regime."

Pakistan, he said, had not created proper conditions for the refugees' repatriation because of the "continued military action" against the East Pakistanis. He added that according to information reaching the Indian Government, Pakistan proposed to place in power "elements opposed to the Awami League ."