Orisugiba sate mo koso yame samidare no koyoi ayame no ne o ya kakemashi - Izumi Shikibu Nikki(English Translation & Meaning)

おりすきはさても社︀やめ五月雨の
今宵菖蒲のねをやかけまし

Roma-ji: Orisugiba sate mo koso yame samidare no koyoi ayame no ne o ya kakemashi
English Translation: When the time has passed,
then and only then I shall cease;
in the early rains
of this night, shall I hang the roots
of iris, and cry aloud?
Meaning: Once the season has gone by, I may well put an end to it; but tonight, in the early-summer rain, shall I hang up the iris roots and weep aloud?
Commentary: 6 The Night Before the Pilgrimage

Two or three days after the exchange on the last day of the fourth month, the prince came secretly to Izumi Shikibu. She was about to set out on a pilgrimage and was keeping a period of purification; besides, she thought his visits were so rare because his feelings were not deep, and that he had come only so as not to seem unkind. So she did not speak with him with any particular intimacy, and pleading her devotions to the Buddha, she let the night pass.
The woman is Izumi Shikibu, daughter of Ōe no Masamune and, as the wife of Tachibana no Michisada, Governor of Izumi, mother of Koshikibu no Naishi. The Prince of the Dazaifu is Prince Atsumichi, fourth son of Emperor Reizei, so called because he served as Governor-General of the Dazaifu.
The day after the night they did not share, the prince wrote asking whether she was leaving on her pilgrimage that day, when she would return, and how much more anxious he would be, and Izumi Shikibu answered with this poem. It was early in the fifth month, just before the Iris Festival.
After the poem she added, "So I am thinking, though I shall surely be back soon," and set out on her pilgrimage, returning after two or three days. On her return a letter came from the prince saying that he longed to come, but the pain of that last night made him reluctant.

The opening lines mean "once the season has passed, I may stop then," with a conditional form and an emphatic construction ending in an auxiliary of will, hinting that she will refrain from meeting until her pilgrimage is over.
From the third line, "of the early-summer rain," the lower verses ask "tonight shall I hang the iris roots?" where "ne," root, also means the sound of weeping aloud. Drawing on the custom of thatching eaves with irises at the Iris Festival and hanging their roots on sleeves to ward off evil, the closing phrase expresses a hesitant resolve. To his "how anxious I shall be," she answers through the festival's emblem that she too will spend the night in tears.
Author: Izumi Shikibu
Source: Izumi Shikibu Nikki
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